/* 中间内容 */
.content {
	min-height: 600px;
}

/* 右边内容 */
.center_content {
	width: 1024px;
	float: left;
	margin-top: -20px;
	min-height: 600px;
	margin-left: 30px;
}

.content_sort {
	width: 1000px;
	height: 36px;
	line-height: 36px;
	background-color: #f6f6f6;
	padding-left: 24px;
	position: relative;
	margin-bottom: 8px;

}

.form_sort {
	position: absolute;
	top: -2px;
	left: 70px;
}

.form_sort .btn {
 	padding: 3px 11px 5px 14px;
	border: 1px solid #dadada;
	background-color: #fff;
	border-radius: 5px;
	color: #8e8f91;
	font-weight: 600;
} 

.form_sort .active {
	background-color: #1ebb90;
	color: #fff;
}

/* 课程信息 */
.content_course {
	margin-left: 30px;
}

.course_info {
	display: inline-block;
	padding: 9px;
	background-color: #f6f6f6;
	margin-bottom: 5px;
}

.course_img {
	position: relative;
}

.course_img img {
	width: 300px;
	height: 160px;
}

.course_sort {
	display: inline-block;
	padding: 5px 8px 3px 13px;
	background-color: #fff;
	font-size: 14px;
	position: absolute;
	top: 10px;
	left: 0;
}

.course_btn {
	position: absolute;
	bottom: 13px;
	left: 170px;
}

.course_btn .btn {
	padding: 6px 17px;
	background-color: #fff;
	font-size: 15px;
	color: #898587;
	margin-right: -5px;
}

.course_btn .active {
	border-radius: 5px;
	background-color: #1b6fbd;
	color: #fff;
}

.course_text {
	margin-top: -5px;
	width: 288px;
	background-color: #fff;
	padding: 15px 0 10px 12px ;
}

.course_text h4 {
	font-size: 15px;
}

.course_text a {
	font-size: 13px;
}

.course_text p {
	margin-top: 10px;
	font-size: 14px;
}

.course_text .number {
	color: #ed2629;
	font-weight: 600;
}

.course_text .answer {
	color: #868888;
	margin-left: 88px;
}